<html>
<head>
<base href="https://bugs.freedesktop.org/" />
</head>
<body>
<p>
<div>
<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - Connecting second of two monitors to a Lenovo W520 causes displays to go crazy"
href="https://bugs.freedesktop.org/show_bug.cgi?id=91333#c8">Comment # 8</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - Connecting second of two monitors to a Lenovo W520 causes displays to go crazy"
href="https://bugs.freedesktop.org/show_bug.cgi?id=91333">bug 91333</a>
from <span class="vcard"><a class="email" href="mailto:mark.cave-ayland@ilande.co.uk" title="Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>"> <span class="fn">Mark Cave-Ayland</span></a>
</span></b>
<pre>Apologies for jumping in on another bug report, however this sounds exactly
like the problem I've been struggling with for years on my Lenovo T420s:
<a class="bz_bug_link
bz_status_NEW "
title="NEW - [NVD9] Unable to start X on ThinkPad T420s laptop"
href="show_bug.cgi?id=56615">https://bugs.freedesktop.org/show_bug.cgi?id=56615</a>
I see the same symptoms in that the kernel "hangs" with an external DisplayPort
connected in discrete mode when trying to use the internal LVDS with the
external monitor. It seems the message I get in the kernel log is similar too:
nouveau E[ PDISP][0000:01:00.0] chid 1 mthd 0x0080 data 0x00000000 0x00005080
0x0000000</pre>
</div>
</p>
<hr>
<span>You are receiving this mail because:</span>
<ul>
<li>You are the assignee for the bug.</li>
</ul>
</body>
</html>